DE102009036477A1 - Apparatus for automated weld plating, e.g. of boiler tube walls, by metal-active gas welding, includes double torch with double-wire individual torches movable relative to each other - Google Patents

Abstract

In apparatus for weld plating of components by metal-active gas (MAG) welding, having a double torch (supported by a pendulum device and having two individual torches in series) driven at welding speed over a predetermined linear path, where the upstream torch is automatically switchable on and off and/or the downstream torch is mechanically switchable on and off, the individual torches are double-wire torches movable relative to each other. An independent claim is included for a corresponding weld plating process, in which the first (upstream) torch generates a buffer layer of the weld seam and the second (downstream) torch generates a buffer layer completely covering the buffer layer. The first torch is automatically ignited at the start of the welding procedure and the second torch is mechanically ignited when the buffer layer is formed; and/or the first torch is automatically switched off at the end of the welding procedure and the second torch is mechanically swithced off when welding is complete. The novel feature is that the individual torches are double-wire torches movable relative to each other.

Description

The The invention relates to a device for welding cladding of components, in particular of boiler tube walls according to Metal Active Gas Welding (MAG), with one of a kind Pendulum worn and two single burner having Double burner, by means of a drive device in welding speed is designed to be movable on a predeterminable, rectilinear path, wherein the individual burners in the welding direction to each other are arranged below, wherein the welding direction Front single burner can be ignited and switched off automatically is formed and / or in the welding direction the front Single burner subsequent single burner mechanically ignitable and can be switched off. In addition, the concerns Invention a method for welding cladding after Metal active gas welding (MAG).

Devices and methods for the weld cladding of components, in particular of boiler tube walls after metal active gas welding (MAG) are known per se from the prior art. A generic device and a generic method are from the EP 1 486 284 A1 known.

Although the from the EP 1 486 284 A1 has become known device in everyday practice, there is room for improvement. The same applies to the after the EP 1 486 284 A1 proposed method implementation. In particular, it is desirable to achieve a simplified process implementation which, incidentally, also makes it possible to fully automatically weld-weld geometrically complicated components.

It Therefore, the object of the invention, a device or a Method of the generic type to the effect to further develop that fully automatic welding cladding of components also with more complicated geometric design is possible.

the device side is proposed to solve this problem, that the Single burners of the double burner are double wire burners, which are relative to each other are designed to be movable.

the method, It is suggested that the individual burners of the Double burner during the welding process relative are moved to each other, being used as a single burner twin wire burner be used.

The from the state of the art after the EP 1 486 284 A1 Previous device has a double burner, the individual burner, which are each designed as a single wire burner, are arranged on a common shuttle. The pendulum device is in turn arranged longitudinally displaceable along a traverse. The traverse can in turn be moved in the vertical direction of the device. In superposition of these movements results in that the individual burners of the double burner are jointly designed to be movable in the height direction and in the longitudinal direction of the double burner bearing crossmember. In addition, the two individual burners can perform a common pendulum motion.

With the embodiment of the invention is now in further development of the EP 1 486 284 A1 previously known device proposed to provide more degrees of freedom for the individual burner, in such a way that a relative movement of the individual burner to each other is possible. It is therefore provided according to the invention to be able to move the individual burners independently. In addition, it is intended to form the individual burner as a double-wire burner.

In the context of the invention, a "double-wire burner" is a burner which operates with two welding wires or welding electrodes. These are fed to a common gas nozzle and melted in a common melt in the welding direction either "side by side" or "arranged one behind the other" arranged. This creates two arcs that share a common potential. It comes according to the invention a double burner is used, which has two individual burners, which are each designed as a double-wire burner. As a consequence, four welding wires or welding electrodes are simultaneously processed with a double burner according to the invention, namely two individual burners, two individual burners being provided. The previously known from the prior art device according to the EP 1 486 284 A1 has, in contrast to a double burner whose individual burners are single-wire burners. The previously known from the prior art device is so far only two wires to process simultaneously.

The embodiment according to the invention proves to the device according to the EP 1 486 284 A1 Moreover, in so far as advantageous in that a relative movement of the two double-wire burner of the double burner is possible. The device according to the invention thus allows different burner movements per double-wire burner. In the double burner according to the prior art, the individual burners are in contrast coupled with each other, so that only joint movements of the individual burners are possible. The invention is so far, inter alia, that the individual burner of the double burner in the course of a proper procedure can be performed relative to each other on different focal lengths. From an alignment of the individual burners before the start of a proper process implementation this is to be distinguished.

preferably, The individual burners can be relative in height direction to each other. In addition, a movement is the single burner relative to each other across the height direction possible, both in the longitudinal direction of the Single burner carrying truss as well as across this. It will about it In addition, proposed a relative rotatability of the individual burner to provide relative to each other, and that by the welding direction defined vertical axis of the single burner.

The inventively provided relative mobility of the individual burner of a double burner to each other provides in an advantageous manner the positive effect of being able to fully automatically weld-weld components with relatively complicated geometries. Thus, with the device according to the invention even spherical components can be equipped with a full surface weld with a Schweißplattierung. The previously known from the prior art device according to the EP 1 486 284 A1 does not allow this.

The Single burners of the double burner are preferably process-controlled. For this purpose, appropriate sensors may be provided, which the geometric design of the Schweißpuplattierenden Component on the one hand and the exact location of the individual burner in the Space on the other hand, where it is the evaluation of the sensor results allows, by means of an appropriate control device a fully automatic movement of the individual burners for the purpose of stopping the To enable weld-plating surface. By means of the device according to the invention can a fully automatic process implementation for welding cladding also performed by geometrically complicated components become.

According to one Another feature of the invention, a plurality of double burners be provided. These are preferably in the longitudinal direction the traverse spaced from each other. Depending on the width The entire device can be three, four or even more be provided more double burner. Preferably, can be move the individual double burner relative to each other, with a Twisting movement relative to the traverse as well a movement relative to this provided can be.

at The use of two double burners are a total of four single burner to disposal. These can be thanks to the invention Design completely independent of each other free Position in the room and relative to the Schweißpluplattierenden Position the surface of the component.

According to one Another feature of the invention is provided that the Schweißpuplattierende Component is designed to be relatively movable to double burner. According to this Further development is not only intended, the double burner relative to the device but also the device relative to the double burner to move. This embodiment is particularly useful if it is for example, in the sweat-plating device is a pipe. The previously known from the prior art device makes it necessary to recharge them with such components. This is time consuming and thus costly. The inventive Device provides a remedy. A re-clamping of weld-plating Components is not required. It is instead rather possible, components, such as pipes with respect to to weld-weld its entire circumferential direction in a fully automated process implementation. Thus, the inventive allows Device over the prior art simplified and thus improved handling, which also involves cost advantages brings.

Further Features and advantages of the invention will become apparent from the following Description with reference to FIGS. Showing:

1 in a schematic side view of the device according to the invention;

2 in a schematic front view of the device according to the invention according to the viewing direction II 1 ;

3 in a schematic representation of the front of a double burner according to the invention;

4 in a schematic plan view from above two juxtaposed transverse to the welding direction double burner according to the invention;

5 a schematic representation of the device according to the invention for the weld cladding of a device according to a first embodiment;

6 a schematic representation of the device according to the invention for the weld cladding of a device according to a second embodiment;

7 a schematic representation of he inventive apparatus for weld cladding of a device according to a third embodiment;

8th a schematic representation of the device according to the invention for the weld cladding of a device according to a fourth embodiment;

9 a schematic representation of the device according to the invention for the weld cladding of a device according to a fifth embodiment;

10 a schematic representation of the device according to the invention for the weld cladding of a device according to a sixth embodiment;

11 in a partially sectioned top view of a prior art produced Schweißplattierung and

12 in a schematic representation of a double burner according to the prior art.

11 shows a detail in a partially sectioned top view of a boiler tube wall, which is formed on one side plated. The plating is formed according to the prior art, for example using a double burner, as in 12 is shown. 12 shows a double burner after the EP 1 486 284 A1 , which has two individual burners, which are each designed as a single-wire burner.

The weld cladding, as in 11 is formed, is formed as follows: First, all webs 2 . 2 ' the boiler tube wall between the pipes 1 and 1' clad with weld beads. For this purpose, for example, on the jetty 2 a buffer layer 11 welded and then directly through a second burner, the top layer 11 ' tightened. Subsequently, the welding of the buffer and cover layers ( 12 . 12 ' ) 13 . 13 ' ) 14 . 14 ' ) 15 . 15 ' ) and ( 16 . 16 ' ). The coverage of the weld beads is about 5 mm. It will be the keel seams 3 covered.

A even plating is possible because the buffer layers the uneven surfaces and Balance the depressions and the cover layers while the buffer layers cover to 100%. This can be done at any time by the cover layers the required plating thickness is maintained. This procedure is not only suitable for boiler tube walls, but for all large components, the large area clad, armored or buffered. Geometrically more complicated Components can be with this known method or with However, do not edit this prior art device.

A double burner according to the prior art is in the 12 shown. The double burner consists of two single burners 20 and 21 moving in the direction of movement 25 that is in the height direction 28 to proceed jointly. The single burners are single wire burners. The single burner 20 and 21 sit together with one of the two single burners 20 and 21 spaced apart spacers 22 on a common commuter device 23 , This commuter device 23 lets a collective pendulum movement of individual burners 20 and 21 one in the height direction 28 extending axis of rotation. The commuter device 23 in turn becomes a traverse 24 carried, in such a way that a movement of the commuter device 23 in the direction of movement 27 relative to the crossbar 24 is possible. The two single burners 20 and 21 according to the embodiment according to the prior art can thus be communally in the direction of movement 25 and 27 move. In addition, a joint pendulum motion is one parallel to the height direction 28 running axis of rotation possible.

As the representation after 12 can also be seen, is the Traverse 24 for the purpose of realizing a movement in the direction of movement 25 between two driving masts 26 in the height direction 28 movably mounted, whereby the representation after 12 only one of these masts 26 lets recognize. The sweat-plating device 30 is with respect to the drawing plane 12 left side of the masts 26 arranged.

The direction of movement 27 results in the transverse direction 29 to the height direction 28 , in which case, in transverse direction 29 only to understand the direction that is in the leaf level 12 lies, that is the direction of the component 30 to or from this way.

The embodiment according to the invention is in the 1 to 10 shown, the 5 to 10 differently designed components 30 show, which can be sweat-plated by means of the device according to the invention or by means of the method according to the invention.

As the representation after 1 can be seen in a schematic side view, the device according to the invention has two vertical rails 34 , with respect to the line of sight 1 arranged one behind the other. The vertical rails 34 are between ceiling rails 35 and the floor 36 clamped. Between the two vertical rails 34 is a sled 37 in the height direction 28 . 29 that is, in the longitudinal direction of the Verti kalschienen 34 movably arranged. The sled 37 carries a rail unit 38 on the one hand and a basket of people 40 on the other hand. Due to the slidable arrangement of the carriage 37 relative to the vertical rails 34 results in a community Verbewegbewegungsmöglichkeit of person basket 40 on the one hand and rail unit 38 on the other hand in the direction of movement 33 that is in the height direction 28 ,

As the representation after 1 further recognizes carries the rail unit 38 a traverse 24 , in turn, one or more burner units 39 wearing. The traverse 24 is in height direction 28 relatively movable on the rail unit 38 arranged so that these in the direction of movement 41 relative to the rail unit 38 is movable.

The device according to the invention further comprises a holding frame 32 , This serves to receive a component to be welded, which, on the basis of the view 1 in 1 can not be seen. The holding frame 32 is preferably designed tiltable and can be from a horizontal position in the in 1 turn shown vertical position. In the horizontal position, not shown, the holding frame 32 be fitted in a simple manner with a Schweißpuplattierenden device. In the erect, that is vertical position of the holding frame 32 like these in 1 is shown, then takes place a Schweißplattierung according to the inventive method.

As can be seen from the above description, the burner unit 29 in the height direction 28 relative to the vertical rails 34 procedure, together with the people's basket 14 according to the direction of movement 33 , In addition, a movement of the burner unit 29 in the height direction 28 relative to the basket 40 possible, in accordance with the direction of movement 41 ,

2 leaves the device according to the invention in a side view according to the viewing direction II 1 recognize, with the better representation because of 2 neither the support frame 32 nor the worn, sweat-plating component 30 are shown.

As can be seen from the presentation 2 results, serves for the movement of the carriage 37 a cable 42 , The cable 42 is connected to a motor-gearbox arrangement 43 coupled. Also other drive means for a movement of the carriage 37 in the height direction 28 are of course conceivable.

2 furthermore lets the crossbar 24 detect. In the illustrated embodiment of these two burner units 39 worn out with respect to the leaf level 2 in the longitudinal direction of the traverse 24 spaced apart from each other. One each burner unit 39 can be in the longitudinal direction of the traverse 24 method, wherein the first burner unit 39 in the direction of movement 44 and the second burner unit 39 in the direction of movement 45 relative to the crossbar 24 is formed movable. A burner unit 39 has a double burner 60 , as will be described below. Furthermore belong to the burner unit 39 Traversing devices, drive devices and / or the like.

3 shows in a schematic detailed view of a double burner 60 according to the embodiment of the invention. As you can see, has the double burner 60 over two in the height direction 28 stacked single burner 20 and 21 , which are each formed as a double-wire burner. These are common, as already explained above, in the longitudinal direction of the traverse 24 that is in the direction of movement 44 respectively. 45 at the crossbar 24 arranged, for what purpose a burner carriage 46 is provided. In addition, both individual burners can be common in the direction of movement 41 that is, in the longitudinal direction of the rail unit 38 be moved.

According to the invention it is provided that the burner holder 47 worn single burner 20 and 21 of the double burner 60 are movable relative to each other. So it can be provided that the individual burners 20 and 21 in the height direction 28 let move, that is in the direction of movement 50 , In addition, a Verfahrmöglichkeit be provided transversely to this, in the direction of movement 51 and / or direction of movement 52 , the latter in particular from the representation after 4 results. According to another proposal, it can be provided that the individual burners 20 and 21 also rotate relative to each other, in the direction of rotation 49 that is to say by the welding direction of the double burner 60 defined vertical axis 48 ,

4 can give more details with respect to the freedom of movement of the double burner 60 or the single burner 20 and 21 be removed.

4 shows an embodiment, according to two double burner 60 are provided. The single burner 20 and 21 of every double burner 60 can be moved relative to each other, in the direction of movement 51 and 52 , as already above with reference to 3 explained. In addition, a relative mobility of the illustrated double burner 60 possible to each other.

Every double burner 60 is on a rail 53 assembled. Along this track 53 is the associated double burner 60 in the direction of movement 54 traversable. The rail 53 is in turn from a holder 55 worn, with the associated rail 53 in the direction of movement 56 relative to the associated holder 55 is movable. In this case, each arrangement form the respective rail 53 and the associated holder 55 a pivot unit 57 out, in the twisting direction 58 relative to the crossbar 24 is rotatable. In addition, a movement of the pivot units 57 in the longitudinal direction of the traverse 24 possible, as already explained above.

All in all, it follows that the individual burners of a double burner are designed jointly in many directions of movement and, in addition, are also movable relative to one another. This allows advantageously, even components 30 With relatively complicated geometrical design, it is possible to automatically weld-weld the entire surface automatically. The 5 to 10 show exemplary embodiments of possible components 30 , in each case in a schematic representation of the device according to the invention from above.

According to 5 is a component 30 shown in the form of a boiler tube wall. With regard to such a boiler tube wall, the inventive device or the method according to the invention allows a simplified and faster welding plating to be carried out.

6 shows as a component 30 ball-like configurations. The components 30 can be preferably relative to the traverse 24 twist, in the direction of rotation 59 , Without reclamping or retrofitting of the components 30 So a full-surface welding is possible. The of the components 30 provided surface can be welded in all directions.

7 shows components 30 , which are cylindrical shaped. These can also be sweat-plated over the entire area without re-tensioning.

8th shows a corrugated iron. This too, thanks to the embodiment according to the invention, can be welded off in all directions for full-surface weld cladding.

9 shows a membrane wall. These too - as well as those in 10 shown sheet metal plate - are welded relatively easily and fully automated in all directions, in particular, a 3D-Abschweißung is possible due to the inventive design - in contrast to the prior art.

LIST OF REFERENCE NUMBERS

1, 1'

pipe

2, 2 '

web

3

fillet

11 11a, 11b

buffer layer

11 ', 11a ', 11b'

topsheet

12 12a

buffer layer

12 ' 12a ', 12b'

topsheet

13 13a

buffer layer

13 ', 13a ', 13b'

topsheet

14 14a

buffer layer

14 ', 14a ', 14b'

topsheet

15 15a

buffer layer

15 ', 15a ', 15b'

topsheet

16 16a

buffer layer

16. ' 16a ', 16b'

topsheet

20 21

single burner

22

spacer

23

commuter facility

24

traverse

25

movement direction

26

driving mast

27

movement direction

28

height direction

29

transversely

30

module

32

holding frame

33

movement direction

34

vertical rail

35

ceiling rail

36

ground

37

carriage

38

rail unit

39

burner unit

40

personnel basket

41

movement direction

42

cable

43

Motor-gear assembly

44

movement direction

45

movement direction

46

burner slide

47

torch holder

48

vertical axis

49

direction of rotation

50, 51, 52

movement direction

53

rail

54

movement direction

55

holder

56

movement direction

57

swivel unit

58

direction of rotation

59

traversing

60

double burner

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - EP 1486284 A1 [0002, 0003, 0003, 0007, 0008, 0009, 0010, 0012, 0030]

Claims (11)

Device for weld-cladding components ( 30 ), in particular boiler tube walls according to the metal-active-gas welding method (MAG) with one of a pendulum device ( 23 ) and two single burners ( 20 . 21 ) having double burner ( 60 ), which is designed to be movable by means of a drive device in welding speed on a predeterminable, rectilinear path, wherein the individual burners ( 20 . 21 ) are arranged successively in the welding direction, wherein the front in the welding direction of individual burner ( 20 ) is designed to ignite and switch off automatically and / or in the direction of welding the front single burner ( 20 ) subsequent single burners ( 21 ) is mechanically ignited and switched off, characterized in that the individual burners ( 20 . 21 ) Are double-wire burners, which are designed to be movable relative to each other. Device according to claim 1, characterized in that the individual burners ( 20 . 21 ) are formed in the welding direction and / or transversely thereto relative to each other movable. Device according to claim 1 or 2, characterized in that the individual burners ( 20 . 21 ) around its vertical axis defined by the welding direction ( 48 ) are formed rotatable relative to each other. Device according to claim 1, 2 or 3, characterized in that the component to be welded-welded ( 30 ) relatively movable to the double burner ( 60 ) is trained. Device according to one of the preceding claims, characterized in that the double burner ( 60 ) longitudinally displaceable along a traverse ( 24 ) is arranged at this. Apparatus according to claim 5, characterized by a person basket ( 40 ), whereby the traverse ( 24 ) on the basket ( 40 ) in the height direction ( 28 ) is arranged movable. Device according to one of the preceding claims, characterized in that a plurality of double burners ( 60 ), the double burners ( 60 ) along the traverse ( 24 ) are arranged spaced next to each other. Device according to claim 7, characterized in that the double burners ( 6 ) are designed to be movable relative to each other. Method for weld-cladding components ( 30 ), in particular of boiler tube walls after metal-active gas welding (MAG), in which a double burner ( 60 ) performs a pendulum motion and is moved at welding speed along a predetermined straight path, wherein in welding direction a first single burner a second single burner follows at a distance, the first single burner generates the buffer layer of a bead and the second single burner produces the cover layer of a bead, wherein the cover layer completely covers the buffer layer, whereby the first single burner is ignited automatically at the beginning of the welding process, and the subsequent second individual burner ( 21 ) is mechanically ignited when reaching the buffer layer and / or with. End of the welding process the first single burner ( 20 ) and the subsequent second single burner ( 21 ) is mechanically switched off when the welding end is reached, characterized in that the individual burners ( 20 . 21 ) are moved relative to each other during the welding process, wherein as a single burner ( 20 . 21 ) Double wire burners are used. Method according to claim 9, characterized in that the individual burners ( 20 . 21 ) in the welding direction and / or transversely thereto relative to each other. Method according to claim 9 or 10, characterized in that the individual burners ( 20 . 21 ) around its vertical axis defined by the welding direction ( 48 ) are rotated relative to each other.

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